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mkrasselt1 / esp32-mdb-master

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Question about PCB and how to connect to esp32 #1

Closed rotda closed 9 months ago

rotda commented 1 year ago

Hi ,

can you share more information how you have connected the esp32 to the MDB Bus ? And explain a little bit more about the PCB Layout . We would like to connect to coffee machine via MDB and ESP32 with RFID Read

mkrasselt1 commented 1 year ago

Sadly this is the wrong side of the mdb bus. this code implements a mdb host device - it emulates the coffee machine - not the slave device like a cashless device. (i have done that as weel, but cant pusblish the code easely)

but for the rfid device itself - you only need two fast optocoupplers and attach them between mdb rx tx / and µc rx nad tx You could referr to this project from nottingham university https://github.com/NottingHack/nv-vend-PCB https://wiki.nottinghack.org.uk/wiki/Vending_Machine